Evidence map›Paper›PMID 20188066›Full record

ArticleBiochimica et biophysica acta2010

Antimicrobial peptides bind more strongly to membrane pores.

Maja Mihajlovic, Themis Lazaridis

Abstract read
In one paragraph

Article in Biochimica et biophysica acta, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

43 citing papers in PubMed.

  1. Review
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  16. Review
  17. Functional Mechanisms Underlying the Antimicrobial Activity of theInternational journal of molecular sciences · 2019
    Article
  18. Computational studies of peptide-induced membrane pore formation.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017
    Review
  19. Computational prediction of the optimal oligomeric state for membrane-inserted β-barrels of protegrin-1 and related mutants.Journal of peptide science : an official publication of the European Peptide Society · 2017
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Maja MihajlovicDepartment of Chemistry, The City College of New York, New York, NY 10031, USA.
Themis Lazaridis

Funding

TNC FUNCTION IN APOPTOTIC ANTIGEN DRIVEN AUTOIMMUNITYG12RR003060 · NCRR · CITY COLLEGE OF NEW YORK · PI GUYDEN, JERRY · 1985 to 2011
$26.1M
Modeling Membrane Binding and Permeabilization by Antimicrobial PeptidesSC1AI084899 · NIAID · CITY COLLEGE OF NEW YORK · PI LAZARIDIS, THEMIS · 2009 to 2012
$1.0M
NCRR NIH HHS G12 RR003060NCRR NIH HHS RR0360NIAID NIH HHS SC1 AI084899PHS HHS SCGM087190
6 · The paper itself

Abstract

Antimicrobial peptides (AMPs) are small, usually cationic peptides, which permeabilize bacterial membranes. Understanding their mechanism of action might help design better antibiotics. Using an implicit membrane model, modified to include pores of different shapes, we show that four AMPs (alamethicin, melittin, a magainin analogue, MG-H2, and piscidin 1) bind more strongly to membrane pores, consistent with the idea that they stabilize them. The effective energy of alamethicin in cylindrical pores is similar to that in toroidal pores, whereas the effective energy of the other three peptides is lower in toroidal pores. Only alamethicin intercalates into the membrane core; MG-H2, melittin and piscidin are located exclusively at the hydrophobic/hydrophilic interface. In toroidal pores, the latter three peptides often bind at the edge of the pore, and are in an oblique orientation. The calculated binding energies of the peptides are correlated with their hemolytic activities. We hypothesize that one distinguishing feature of AMPs may be the fact that they are imperfectly amphipathic which allows them to bind more strongly to toroidal pores. An initial test on a melittin-based mutant seems to support this hypothesis.

Indexed as

AlamethicinAnimalsAntimicrobial Cationic PeptidesFish ProteinsHemolytic AgentsHydrophobic and Hydrophilic InteractionsIn Vitro TechniquesMagaininsMelittenMembranesModels, MolecularMolecular Dynamics SimulationMutant ProteinsProtein BindingThermodynamicsAlamethicinAntimicrobial Cationic PeptidesFish ProteinsHemolytic AgentsMagaininsMelittenmoronecidin protein, Morone saxatilisMutant Proteins

Identifiers

PMID20188066
PMCPMC2885479

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.